391163 has 2 divisors, whose sum is σ = 391164. Its totient is φ = 391162.

The previous prime is 391159. The next prime is 391177. The reversal of 391163 is 361193.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 391163 - 2² = 391159 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (391103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 195581 + 195582.

It is an arithmetic number, because the mean of its divisors is an integer number (195582).

2³⁹¹¹⁶³ is an apocalyptic number.

391163 is a deficient number, since it is larger than the sum of its proper divisors (1).

391163 is an equidigital number, since it uses as much as digits as its factorization.

391163 is an evil number, because the sum of its binary digits is even.

The product of its digits is 486, while the sum is 23.

The square root of 391163 is about 625.4302519066. The cubic root of 391163 is about 73.1339879862.

The spelling of 391163 in words is "three hundred ninety-one thousand, one hundred sixty-three".